questions about the tps

[Orangedsm95]

I pulled my tb to replace the shaft seals. Im trying to adjust the tps. The problem im having is that when i try to set the ips i get o ohms (closed) when the tps is turned all the way to the left but when i rotate the tps to the right it never changes from closed to open (infinite ohms). What im wondering is if this could be a sign of the tps being bad or if it could be something else?

Originally Posted by steve
From what I can tell 2G's TPS adjustment procedure is different than what I've posted for 1G's.

2G's critical adjustment is the Idle Position Switch that's part of the TPS.
The manual has you place a 0.0177" (0.45mm) feeler guage between the stop screw and the throttle pulley to open the butterfly and then adjust the TPS right to where the IPS (pins 3 and 4) switches from closed to open. Then they have you verify that the TPS (pin 2 and 4) reads between .4 and 1V while the feeler guage is still in place.
Anything in that range is ok as long as the IPS is adjusted correctly.
There is no way to adjust the TPS voltage independantly of the IPS on a 2G that I can see.

I followed these to adjust the tps but im having no luck adjusting the ips. Please help im losing my mind here and i need to get this pos running so i can get back and worth to work.

 

[TsiJohn333]

If you followed the instructions step by step then you should be good to go. You should be getting a reading because all ohms do is just measure resistance. Maybe try a different ohm meter because if your tps sensor is bad, you should still see resistance between pins 3 and 4.

 

[LiquidX]

If you want to try a different way, the ECU wants to see 0.64v from the TPS at 0% throttle. Just tap into the output voltage wire (signal) going to the ECU and check the voltage with the ignition in the "On/Acc" position.
If it's off then just slowly rotate the TPS until it reads the proper voltage.

For future reference from the FSM:

2G 4G63T TPS
1 - Green/Yellow (+5v Sensor Power)
2 - Brown/Red (TPS output voltage)
3 - Yellow/Red (IPS switch)
4 - Black (Ground)

1G 4G63T TPS
1 - Green/Red (+5v Sensor Power)
2 - Green/White (TPS output voltage)
3 - NC
4 - Green/Black (Ground)

Steve

 

[Orangedsm95]

If you want to try a different way, the ECU wants to see 0.64v from the TPS at 0% throttle. Just tap into the output voltage wire (signal) going to the ECU and check the voltage with the ignition in the "On/Acc" position.
If it's off then just slowly rotate the TPS until it reads the proper voltage.

LiquidX - I'll have to check the voltage and try that.

Well just for sh*ts n giggles i checked the 1st and 2nd pins for resistance also and the volt tester was reading the resistance when i turned the tps. I know that doesnt matter much but i did it to see if the tester was working. What im wondering is that if the ips isnt showing resistance why would the other pins be showing resistance?

Another thing i noticed is when i took the car for a ride when i let off the gas the car doesnt lean out like it normally would when deaccelerating. The af ratio stays about 14.3-14.5 like you're still crusing along. I tried another voltage tester and still had the same results when i checked the resistance between pins 3 and 4.

 

[TsiJohn333]

Are you testing the right pins? Pins 3 and 4 are the last two pins on the right side of the tps sensor. Pin 4 being black (ground). Not trying to be a smartass, I'm just making sure.

 

[Orangedsm95]

Are you testing the right pins? Pins 3 and 4 are the last two pins on the right side of the tps sensor. Pin 4 being black (ground). Not trying to be a smartass, I'm just making sure.

You're good bro. I been checking pins 3 and 4 and im not getting any reading on the tester but it shows resistance when i check pins 1 and 4 or pins 2 and 4. I just dont get how it stop working out of no where. It worked fine the day before i pulled the tb.

 

[Below Ambient]

ive had better luck following the procedure stated by LiQuiDX and it worked, but i fiddled with it and the BISS without using a volt meter a bit and its just a bit better

 

[TsiJohn333]

I think it's safe to say that something inside the tps sensor broke when you replaced your seals but you can test it one more way to be on the safe side. Remove the clip and harness that plugs into the tps sensor. When you remove the harness you should see the four prongs that that connects to the harness on your tps sensor. Aligator clip prongs 3 and 4 on the tps sensor or you can probe them and see if that works and see if you have resistance. This way you know your acctually probing the prongs on tps instead of the wires for a better connection.

 

[Orangedsm95]

Well i bought another tps, put it on, tested the resistance and everything is working fine now. Thanks for all of your guys info. I learned alot of stuff i didnt know .